Bertrand type refractometer unsigned

PART OF:
Bertrand type refractometer, in case
Made:
1870-1893 in France
maker:
Émile Bertrand
Bertrand type refractometer unsigned, French, 1870-1893.

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Bertrand type refractometer unsigned, French, 1870-1893.
Science Museum Group
© The Board of Trustees of the Science Museum

Bertrand type refractometer unsigned, French, 1870-1893.

Details

Category:
Optics
Object Number:
1893-15/1
Materials:
steel (metal), brass (copper, zinc alloy), glass, wood (unidentified), leather, paper (fibre product) and textile
Measurements:
reftactometer: 30 mm x 56 mm x 25 mm, .078kg
type:
refractometer